China only has 1 time zone — even though it's about the same size as the US.

People practice Taichi at a square in Qinyang, Henan province, China, October 18, 2015.
China Daily/Reuters

As a result, some parts of China experience unusual lighting. In northwestern China's Urumqi, Xinjiang, for example, people experience sunsets at midnight in the summer, and sunrises at 10 AM in the winter.